cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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loop2.c (509B)

      1// SPDX-License-Identifier: GPL-2.0
      2// Copyright (c) 2019 Facebook
      3#include <linux/sched.h>
      4#include <linux/ptrace.h>
      5#include <stdint.h>
      6#include <stddef.h>
      7#include <stdbool.h>
      8#include <linux/bpf.h>
      9#include <bpf/bpf_helpers.h>
     10#include <bpf/bpf_tracing.h>
     11
     12char _license[] SEC("license") = "GPL";
     13
     14SEC("raw_tracepoint/consume_skb")
     15int while_true(volatile struct pt_regs* ctx)
     16{
     17	int i = 0;
     18
     19	while (true) {
     20		if (PT_REGS_RC(ctx) & 1)
     21			i += 3;
     22		else
     23			i += 7;
     24		if (i > 40)
     25			break;
     26	}
     27
     28	return i;
     29}